78 lines
2.0 KiB
C
78 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* ADXL355 3-Axis Digital Accelerometer SPI driver
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*
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* Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
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*/
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#include <linux/module.h>
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#include <linux/mod_devicetable.h>
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#include <linux/regmap.h>
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#include <linux/spi/spi.h>
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#include <linux/property.h>
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#include "adxl355.h"
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static const struct regmap_config adxl355_spi_regmap_config = {
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.reg_bits = 7,
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.pad_bits = 1,
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.val_bits = 8,
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.read_flag_mask = BIT(0),
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.max_register = 0x2F,
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.rd_table = &adxl355_readable_regs_tbl,
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.wr_table = &adxl355_writeable_regs_tbl,
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};
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static int adxl355_spi_probe(struct spi_device *spi)
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{
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const struct adxl355_chip_info *chip_data;
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struct regmap *regmap;
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chip_data = device_get_match_data(&spi->dev);
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if (!chip_data) {
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chip_data = (void *)spi_get_device_id(spi)->driver_data;
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if (!chip_data)
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return -EINVAL;
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}
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regmap = devm_regmap_init_spi(spi, &adxl355_spi_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
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PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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return adxl355_core_probe(&spi->dev, regmap, chip_data);
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}
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static const struct spi_device_id adxl355_spi_id[] = {
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{ "adxl355", (kernel_ulong_t)&adxl35x_chip_info[ADXL355] },
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{ "adxl359", (kernel_ulong_t)&adxl35x_chip_info[ADXL359] },
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{ }
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};
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MODULE_DEVICE_TABLE(spi, adxl355_spi_id);
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static const struct of_device_id adxl355_of_match[] = {
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{ .compatible = "adi,adxl355", .data = &adxl35x_chip_info[ADXL355] },
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{ .compatible = "adi,adxl359", .data = &adxl35x_chip_info[ADXL359] },
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{ }
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};
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MODULE_DEVICE_TABLE(of, adxl355_of_match);
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static struct spi_driver adxl355_spi_driver = {
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.driver = {
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.name = "adxl355_spi",
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.of_match_table = adxl355_of_match,
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},
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.probe = adxl355_spi_probe,
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.id_table = adxl355_spi_id,
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};
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module_spi_driver(adxl355_spi_driver);
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MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
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MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer SPI driver");
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MODULE_LICENSE("GPL v2");
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MODULE_IMPORT_NS(IIO_ADXL355);
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